Article
Energy & Fuels
Yiqing Zhang, Junhui Liang, Gan Luo, Xin Yao, Xiang Ding, Wei Wei, Huayu Chen, Laishun Qin, Yuexiang Huang, Da Chen
Summary: Utilizing solar-cell-assisted water splitting is a promising strategy for producing clean hydrogen energy, but the efficiency is hindered by the slow reaction kinetics. In this work, a covalent doping approach is used to modify the electronic structure and reduce the overpotentials for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), resulting in improved efficiency.
Review
Chemistry, Applied
Shuo Chen, Tianxiang Liu, Zhuanghao Zheng, Muhammad Ishaq, Guangxing Liang, Ping Fan, Tao Chen, Jiang Tang
Summary: This study focuses on the development of Sb2Se3-based photocathodes in photoelectrochemical water splitting, highlighting various architectures and engineering efforts to improve the efficiency of solar-to-hydrogen conversion. The study also discusses future research directions in the field of Sb2Se3-based photocathodes.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Pardis Adams, Ramon Schnyder, Thomas Moehl, Jan Buhler, Angel Labordet Alvarez, Mirjana Dimitrievska, Keith McKenna, Wooseok Yang, S. David Tilley
Summary: Antimony selenide has shown significant progress as a solar energy conversion material in the past decade. However, the photovoltage deficit remains a challenge. A combination of solution phase silver nitrate treatment and sulfurization has been found to effectively mitigate the photovoltage deficit and improve the surface quality of the material.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Rajiv Ramanujam Prabhakar, Thomas Moehl, Dennis Friedrich, Marinus Kunst, Sudhanshu Shukla, Damilola Adeleye, Vinayaka H. Damle, Sebastian Siol, Wei Cui, Laxman Gouda, Jihye Suh, Yaakov R. Tischler, Roel van de Krol, S. David Tilley
Summary: This study investigates the charge carrier dynamics of Sb2Se3 and the influence of sulfur treatment on its optoelectronic properties. The results show that sulfur treatment can increase the carrier lifetime of Sb2Se3 by passivating deep defects.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ahmed Chnani, Andrea Knauer, Steffen Strehle
Summary: This study presents excellent ultrathin hematite-hercynite photoanodes that are stable, efficient, and cost-effective for photoelectrochemical water splitting. By adjusting the aluminum concentration and optimizing the annealing conditions, the photocurrent density and light absorption of the photoanodes are significantly improved. Furthermore, the ultrathin hematite-hercynite photoanodes enable unbiased solar water splitting.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Hongjun Chen, Meng Zhang, Thanh Tran-Phu, Renheng Bo, Lei Shi, Iolanda Di Bernardo, Jueming Bing, Jian Pan, Simrjit Singh, Josh Lipton-Duffin, Tom Wu, Rose Amal, Shujuan Huang, Anita W. Y. Ho-Baillie, Antonio Tricoli
Summary: Metal halide perovskite solar cells with an appropriate bandgap and high output voltage can directly drive solar water splitting, but their sensitivity to moisture affects their application in integrated devices. Using earth-abundant metals as co-catalysts can improve the efficiency of low-cost H-2 production.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Hojoong Choi, Sehun Seo, Chang Jae Yoon, Jae-Bin Ahn, Chan-Sol Kim, Yoonsung Jung, Yejoon Kim, Francesca Toma, Heejoo Kim, Sanghan Lee
Summary: Despite the achievements in the PEC performance of OHP-based photoelectrodes, scaling up from small-scale to large-scale systems remains a challenge due to resistive losses and intrinsic defects. This study suggests a scalable design for OHP-based PEC systems by modularization of optimized OHP photoelectrodes, achieving a high solar-to-hydrogen conversion efficiency of 10.4%. A proof-of-concept OHP module with 16 photoelectrodes achieves a photocurrent of 11.52 mA under natural sunlight without external bias, providing insights for the design of scalable OHP-based PEC systems for practical application and commercialization.
Article
Energy & Fuels
Manjing Wang, Biao Shi, Qixing Zhang, Xingliang Li, Sanjing Pan, Ying Zhao, Xiaodan Zhang
Summary: This study uses a low-cost perovskite/silicon tandem cell and high-transmittance quartz glass to construct an unassisted solar water-splitting device, achieving a high solar-to-hydrogen efficiency. The design can maintain stable performance for 20 hours and provides a novel integrated solar water-splitting system.
Article
Chemistry, Physical
Yan Li, Kang Wang, Dingwang Huang, Lintao Li, Jiahua Tao, Nabil Ahmed Abdel Ghany, Feng Jiang
Summary: Solar water splitting using a highly efficient Sb2Se3 photocathode modified with a Cd(x)Zn(1-x)S() layer is reported in this study. The research offers an effective strategy for fabricating Sb2Se3-based photocathodes to efficiently produce hydrogen via solar water splitting. Additionally, a tandem device with a Pt/CdxZn1-xS/Sb2Se3 photocathode and BiVO4 photoanode showed notable stability for over 8.5 hours without obvious degradation, demonstrating a new direction for achieving durable and high-efficiency materials for overall solar water splitting.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Electrochemistry
Marcos Vinicius de Lima Tinoco, Magno Barcelos Costa, Lucia Helena Mascaro, Juliana Ferreira de Brito
Summary: The photoactivity of Sb2Se3 semiconductor containing Pt nanoparticles obtained with a fast deposition rate was investigated in this study. The photocatalyst prepared using photoelectrodeposition method showed a significantly higher photocurrent density compared to the one prepared through electrodeposition method. The difference in nucleation and growth kinetics of Pt nanoparticles between the two methods was responsible for the improved performance of the photocatalyst prepared using the photoelectrodeposition method.
ELECTROCHIMICA ACTA
(2021)
Article
Energy & Fuels
Yiqing Zhang, Junhui Liang, Gan Luo, Xin Yao, Xiang Ding, Wei Wei, Huayu Chen, Laishun Qin, Yuexiang Huang, Da Chen
Summary: Utilizing solar-cell-assisted water splitting to produce clean hydrogen energy and address the energy crisis is a promising strategy. However, the efficiency of solar to hydrogen (STH) is limited by the slow reaction kinetics of the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). This study develops a covalent doping approach by growing amorphous Ni-Fe phosphide on WS2 nanosheets, which modifies the electronic structure and reduces the overpotentials for OER and HER by 7% and 15%, respectively. Moreover, the bifunctional electrocatalyst, Ni-Fe phosphide @ WS2, can operate at a low voltage with a high current density, achieving a substantial STH efficiency of 8.49% when coupled with a triple-junction solar cell.
Article
Chemistry, Physical
Pardis Adams, Fabrizio Creazzo, Thomas Moehl, Rowena Crockett, Peng Zeng, Zbynek Novotny, Sandra Luber, Wooseok Yang, S. David Tilley
Summary: This study explores simple and low-temperature treatments of Sb2Se3/TiO2-based photocathodes to address the photovoltage deficit challenge. Treatments with (NH4)(2)S and CuCl2 significantly increased the photocurrent and onset potential, while modifying the surface defects. These low-cost treatments enhance the practical potential of Sb2Se3 for large-scale water splitting.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Angang Song, Zhixue Li, Bari Wulan, Suxiang Liu, Baofeng Zhao, Di Zhu, Junhua Hu
Summary: A p-type heterojunction photoelectrode made of CuAlO2 and CuBi2O4 was developed for the first time by using a solution-based deposition method. Its advantageous bandgap size and favorable band positions make it a highly prospective option for photoelectrochemical water splitting. The heterojunction photoelectrode showed improved photoelectrochemical activity compared to CuBi2O4 alone, attributed to decreased recombination of photo-generated electrons and holes and improved charge separation and transport in the heterostructure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
David J. Lawrence, Brianna L. Smith, Cameron D. Collard, Keyton A. Elliott, Kyle L. Fakhoury, Jeffery D. Mangold, Anna N. Soyka
Summary: Monolithically-integrated tandem photoanodes were fabricated on substrates with epitaxial n-GaAs1-xPx grown on n(+)-GaAs wafers. Transparent, conducting SnO2:F provides protection and electrical connections for the PV cell, achieving unassisted solar water splitting with an efficiency approaching 2%.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Zhen Liu, Jiamin Lan, Xinnian Xia, Tong Ren, Xuxu Wang, Rui Guo, Weijian Xu, Shuaijun Pan
Summary: Cotton fiber, due to its braidability and abundance of surface functional groups, can be woven into various shapes and sizes to stably anchor different catalytically active centers, effectively preventing catalyst shedding and activity reduction during electrocatalytic overall water splitting.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
D. Alicia Garcia-Osorio, Thomas P. Shalvey, Liam Banerji, Khezar Saeed, Gaia Neri, Laurie J. Phillips, Oliver S. Hutter, Carla Casadevall, Daniel Anton-Garcia, Erwin Reisner, Jonathan D. Major, Alexander J. Cowan
Summary: We present a hybrid photocathode, composed of Sb2Se3 and a molecular catalyst, for H-2 evolution. By using a high surface area TiO2 scaffold, we significantly increased the loading of the Ni molecular catalyst from 7.08 +/- 0.43 to 45.76 +/- 0.81 nmol cm(-2), resulting in photocurrents of 1.3 mA cm(-2) at 0 V vs. RHE, which is 81-fold higher than the device without the TiO2 mesoporous layer.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Hayoung Im, Sunihl Ma, Hyungsoo Lee, Jaemin Park, Young Sun Park, Juwon Yun, Jeongyoub Lee, Subin Moon, Jooho Moon
Summary: Chiral inorganic materials have shown promise in improving the efficiency of solar-to-hydrogen conversion in water-splitting devices due to their spin control capability and catalytic activity. However, a rational design for these materials in photoelectrochemical water-splitting is lacking. In this study, we investigated chirality transfer phenomena at the molecular level and found that chiral ligand molecules exhibit direction-dependent dimer interactions in the precursor solution, affecting chirality transfer and material quality. Based on this understanding, we successfully fabricated a chiral inorganic material-based water-splitting device with outstanding oxygen evolution reaction performance, demonstrating the great potential of chirality-induced spin-selectivity in the water-splitting process.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Multidisciplinary Sciences
Sang Eon Jun, Youn-Hye Kim, Jaehyun Kim, Woo Seok Cheon, Sungkyun Choi, Jinwook Yang, Hoonkee Park, Hyungsoo Lee, Sun Hwa Park, Ki Chang Kwon, Jooho Moon, Soo-Hyun Kim, Ho Won Jang
Summary: This study demonstrates the decoration of iridium single atoms (SAs) on silicon photoanodes, and assesses their role in separating and transferring photogenerated charge carriers. By embedding the iridium SAs in a NiO/Ni thin film, a benchmarking photoelectrochemical performance is achieved with high photocurrent density and stability. This research provides insights into the rational design of SAs on silicon photoelectrodes and the potential of iridium SAs in boosting photogenerated charge carrier kinetics.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Subin Moon, Jaemin Park, Hyungsoo Lee, Jin Wook Yang, Juwon Yun, Young Sun Park, Jeongyoub Lee, Hayoung Im, Ho Won Jang, Wooseok Yang, Jooho Moon
Summary: In order to achieve practical solar hydrogen production, a low-cost photocathode with high photocurrent density and onset potential is needed. In this study, an efficient and stable overall photoelectrochemical tandem cell is developed with a Cu3BiS3-based photocathode. The preparation of a Bi2S3-Cu3BiS3 blended interlayer using a one-step solution process with two sulfur sources is found to enhance the performance of the Cu3BiS3 thin-film photocathode. The resulting solar-to-hydrogen efficiency is 2.33% with excellent stability exceeding 21 hours.
Article
Chemistry, Multidisciplinary
Hyungsoo Lee, Sunihl Ma, Seungtae Oh, Jeiwan Tan, Chan Uk Lee, Jaehyun Son, Young Sun Park, Juwon Yun, Gyumin Jang, Jooho Moon
Summary: The use of chiral 2D organic-inorganic hybrid perovskites as a spin-filtering layer on the photoanode can enhance the oxygen evolution performance in photoelectrochemical water-splitting systems. This device achieves a reduced overpotential, increased photocurrent, and excellent operational stability.
Article
Chemistry, Multidisciplinary
Jaemin Park, Junwoo Lee, Hyungsoo Lee, Hayoung Im, Subin Moon, Chang-Seop Jeong, Wooseok Yang, Jooho Moon
Summary: A wireless solar water splitting device allows for an inexpensive and distributed solar-to-fuel system. This device utilizes a highly efficient hydrogen-generating artificial leaf that integrates a hybrid perovskite as the light absorber with catalysts for electrochemical reaction. The device achieves a high photocurrent density and solar to hydrogen efficiency, demonstrating the effectiveness of its design.
Article
Chemistry, Physical
Young Sun Park, Juwon Lee, Hyungsoo Lee, Juwon Yun, Gyumin Jang, Jeongyoub Lee, Sanguk Son, Chan Uk Lee, Chang-Seop Jeong, Subin Moon, Soobin Lee, Hyoung-il Kim, Jooho Moon
Summary: The lack of efficient photoanodes is a major challenge for unbiased solar-to-fuel conversion. In this study, solution-processed Sb2S3 nanorod arrays with improved optoelectronic properties and crystallographic orientation were obtained. Surface treatment with (NH4)(2)WS4 passivated the sulfur vacancy of Sb2S3 and enhanced charge extraction. An efficient hydrogen generation device was demonstrated using an Sb2S3 nanorod array-based photoanode for iodide oxidation and a perovskite-based photocathode, achieving a hydrogen production current density of 5.7 mA cm(-2) without external bias.
ADVANCED ENERGY MATERIALS
(2023)
Editorial Material
Nanoscience & Nanotechnology
Jeanne Crassous, Matthew J. Fuchter, Danna E. Freedman, Nicholas A. Kotov, Jooho Moon, Matthew C. Beard, Sascha Feldmann
Summary: Solution-processable semiconductors based on small molecules, polymers or halide perovskites combine sustainable manufacturing with exceptional optoelectronic properties that can be chemically tailored to achieve flexible and highly efficient optoelectronic and photonic devices. A new exciting research direction is the study of the influence of chirality on light-matter interactions in these soft materials and its exploitation for the simultaneous control of charge, spin and light. In this Viewpoint, researchers working on different types of chiral semiconductors discuss the most interesting directions in this rapidly expanding field.
NATURE REVIEWS MATERIALS
(2023)
Article
Energy & Fuels
Prakriti Kayastha, Devendra Tiwari, Adam Holland, Oliver S. Hutter, Ken Durose, Lucy D. Whalley, Giulia Longo
Summary: Chalcogenide perovskites, especially BaZrS3, are promising absorber materials for photovoltaic applications due to their high absorption coefficient, bandgap, and stability. Recent studies have also reported the existence of 2D Ruddlesden-Popper phases in the Ba-Zr-S compositional space. High-temperature experiments and characterization techniques such as XRD, SEM, EDX, and Raman spectroscopy were employed to investigate the formation and composition of chalcogenide perovskite phases. The study demonstrates the difficulty in achieving phase-pure chalcogenide perovskites through solid-state synthesis and the importance of using multiple techniques to determine their composition.
Article
Chemistry, Physical
Young Sun Park, Gyumin Jang, Inkyu Sohn, Hyungsoo Lee, Jeiwan Tan, Juwon Yun, Sunihl Ma, Jeongyoub Lee, Chan Uk Lee, Subin Moon, Hayoung Im, Seung-Min Chung, Seungho Yu, Hyungjun Kim, Jooho Moon
Summary: In this study, a highly efficient and durable electrocatalyst - molybdenum disulfide (MoS2) was reported for iodide oxidation reaction (IOR). MoS2 nanosheets deposited on a porous carbon paper via atomic layer deposition exhibited good oxidation reaction current density and long-term stability. A two-electrode system consisting of the MoS2 anode and a commercial Pt@C cathode was fabricated for hydrogen evolution reaction in water splitting. Furthermore, a photovoltaic-electrochemical hydrogen production device comprising this electrolyzer and a single perovskite photovoltaic cell achieved a high current density for hydrogen production.
Article
Chemistry, Applied
Jeongyoub Lee, Changhoon Choi, Jung Been Park, Seungho Yu, Jinho Ha, Hyungsoo Lee, Gyumin Jang, Young Sun Park, Juwon Yun, Hayoung Im, Subin Moon, Soobin Lee, Jung-Il Choi, Dong-Wan Kim, Jooho Moon
Summary: Heterostructure engineering with rational design of structure and interface contacts can effectively capture soluble lithium polysulfide intermediates and promote their conversion reactions. TiO2@MoS2 heterostructures on carbon cloth show high rate capability, good cycling stability, and satisfactory areal capacity in Li-S batteries under increased sulfur loading. The effect of the built-in electric field's direction on electrocatalytic reactions of polysulfide intermediates is thoroughly investigated, and the rationally arranged TiO2@MoS2 interlayer demonstrates superior electrocatalytic activities, highlighting the importance of optimizing the built-in electric field for high-performance Li-S batteries.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Sungkyun Choi, Sol A. Lee, Jin Wook Yang, Woonbae Sohn, Jaehyun Kim, Woo Seok Cheon, Jaemin Park, Jin Hyuk Cho, Chung Won Lee, Sang Eon Jun, Sung Hyuk Park, Jooho Moon, Soo Young Kim, Ho Won Jang
Summary: Designing an appropriate catalyst for photoelectrochemical water splitting is crucial for efficient solar to hydrogen energy production. Introducing small amounts of noble metals, such as Au, into transition metal-based materials can enhance the efficiency of solar water oxidation.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Optics
Gyumin Jang, Hyowon Han, Sunihl Ma, Junwoo Lee, Chan Uk Lee, Wooyong Jeong, Jaehyun Son, Dongki Cho, Ji-Hee Kim, Cheolmin Park, Jooho Moon
Summary: A rapid crystallization method based on hot-antisolvent bathing is proposed to obtain phase-pure two-dimensional Ruddlesden-Popper perovskite films for deep-blue PeLEDs. The developed PeLEDs demonstrate high performance with a peak EQE of 0.63% and excellent spectral stability, matching well with the Rec.2020 standard blue gamut.
ADVANCED PHOTONICS
(2023)
Article
Chemistry, Physical
Mi Gyoung Lee, Jin Wook Yang, Ik Jae Park, Tae Hyung Lee, Hoonkee Park, Woo Seok Cheon, Sol A. Lee, Hyungsoo Lee, Su Geun Ji, Jun Min Suh, Jooho Moon, Jin Young Kim, Ho Won Jang
Summary: The introduction of indium oxide nanorods as an electron transport layer enhances the photoelectrochemical performance of bismuth vanadate. A tannin-nickel-iron complex is used as an oxygen evolution catalyst to accelerate the reaction kinetics. The fabricated TANF/BiVO4/In2O3 NR photoanode exhibits improved photoactivity with high photocurrent densities.
